Mode of constructing the gages oe machines eob



n T l; sTATEs PATENT OFFICE.

ELK ANAH LEONARD, OF CANTON, MAINE.

lVlODIE 0F CONSTRUCTIN Gr THE GAGES 0F MACHINES FOR SAWING SHINGLES.

Specification forming part of Letters Patent No. 453, dated November 4,1837; .Reissued Octobei` 26, 1838, No. 5.

To au whom t may concern.' Y

Be it known that I, ELKANAH LEONARD, of Canton, in thecounty of Oxfordand State of Maine, have invented a new and useful Improvement in SetVOrks of Machines for Sawing Shingles; and I do hereby declare that thefollowing is a full and exact description,

The nat-ure of my invention consists in providing the common shinglemachines with racks or gages to regulate the set, '(Instead of those nowin use) so constructed that without being moved they may be attached tothe sliding block lat a greater or less distance from its center,thereby varying the set so that shingles of varying lengths and of anequal thickness and dierent thicknesses of the` same length may be sawedin the same machine.

To enable others skilled in the art to make and use my invention, I willproceed to describe its construction and Operation: I construct mymachines except the gages in the common forms of those now in use,(Drakes, Hobbss and perhaps some Others excepted) and like the commonshingle machines, I make my gages of cast iron and use two to eachmachine; one at each end of the sliding block.

Let A B on the drawing Figure l be the sliding block tO which the dogsl, 2 are attached that hold the block from which the shingles are sawed;C D a part of the rack or gage, with teeth like those now in use; butdiering in different kinds of machines; E F an additional part or piece,on the end of the common gage next the sliding block, and ruiming out onone or both sides of the other part of the gage, according to another;and consequently from one set of the construction of the machine inwhich it is to be used. Thereare pivots either on' the upper or underside, by which the gage is attached to the sliding block. The pivots arelinches apart from their centers or thereabout, or else half thatdistance; by flattening the sides next each other and mak# ing them inthe shape of the space left between the turn of the hook and the piecea, Fig. 2, their centers may be brought within of an inch of each other.The pivots project out a little toward the sliding block, and run acrossthat edge Oi the gage to the opposite side; so that they will it into aplate on the side Of the piece a. a is a small piece of iron placedbetween the pivot by which the gage is attached and the'sliding block,of sufficient thickness toprevent the other pivots from striking thesliding block when the machine sets. The side next the gage has a fluteor hollow in it perpendicularly so that it will fit and turn a little,on the projecting part of the pivot. The dotted lines H I are arepresentation of the hook that holds the gage when it is in the slidingblock. The dots l, 2, 3, and 6 are holes in the sliding-block betweeneach of the pivots and running through it horizontally at equaldistances' from each other; so that the hook will go around either ofthe pivots and into two holes in the slidingblock without moving thegage. Fig. 2 is a representation of the hook with the piece A, when outof the machine. The hook is made of a small rod of iron and passesaround one of the pivots, then around or through the piece A, and thenthrough the holes in the slidingblock and holds the gage snug in itsplace by having on the end of it a screw and nut. It may be made in theform here represented, or both 'parts may be of the same length forminga staple and having a nut on each part. y

The gages vmay be held from rising by rabbeting out the co-rner of thesliding block on the underside next the gages and letting the part ofthe gage E F slip into the rabbet, or otherwise. This improvement iscalculated to be applied to machines that set alternately at each end ofthe sliding block.

The gages must be attached each at the same distance from the center ofthe sliding block; therefore by moving the hook or staple'and the pieceA, from one pivot to holes tO another the set may be varied with ease, Y

What I cla-im as my invention and desire to secure by Letters Patent is-The method of changing the attachment between the gages and the slidingblock at a greater Or lesser distance from the center of the latter andthe method of attaching herein described.

ELKANAH LEONARD.

Witnesses WILLIAM THOMPSON, OAIIEs THOMPSON.

[FIRST PRINTED 1914.]

